Department of Physics Faculty

Michael Graf

Professor of Physics

Research

Selected Publications

鈥淓ffect of structural disorder on the Kitaev magnet Ag3LiIr2O6,鈥 F. Bahrami, E. M. Kenney, C. Wang, A. Berlie, O. I. Lebedev, M. J. Graf, and F. Tafti, Phys. Rev. B听103, 094427 (2021).听co-first authors

鈥淎bsence of local moments in the kagome metal KV3Sb5听as determined by muon spin spectroscopy,鈥 E. M. Kenney, B. R. Ortiz, C. Wang, S. D. Wilson, and M. J. Graf, J. Phys.: Condens. Matter听33, 235801 (2021).

鈥淪uperconductivity in the Z2kagome metal KV3Sb5,鈥 B. R. Ortiz, P. M. Sarte, E. M. Kenney, S. M. L. Teicher, R. Seshadri, M. J. Graf, and S. D. Wilson, Phys. Rev. Mat.听5, 034801 (2021).

"Monopole-limited nucleation of magnetism in Eu2Ir2O7," Physical Review B听 101, 174435 (2020).

Competition between static and dynamic magnetism in the Kitaev spin liquid material Cu2IrO3, E. M. Kenney, C. U. Segre, W. Lafargue-Dit-Hauret, O. I. Lebedev, M. Abramchuk, A. Berlie, S. P. Cottrell, G. Simutis, F. Bahrami, N. E. Mordvinova, J. McChesney, G. Fabbris, D. Haskel, X. Rocquefelte, M. J. Graf, and F. Tafti, Phys. Rev. B听100, 094418 (2019)听[Editor鈥檚 selection].

Field-tunable quantum disordered ground state in the triangular lattice antiferromagnet NaYbO2, M. Bordelon, E. M. Kenney, T. Hogan, L. Posthuma, M. Kavand, Y. Lyu, M. Sherwin, C. Brown, M. J. Graf, L. Balents, and S. D. Wilson, Nature Physics听15, 1058 (2019).

Suppression of听渭+听depolarization by fast magnetic fluctuations at avoided level crossings for Ho3+听ions in CaWO4,听E. Kenney, A. Amato, S. R. Giblin, B. Z. Malkin, and M. J. Graf,听Phys. Rev. B听98, 134424 (2018).听

Quasistatic antiferromagnetism in the quantum wells of SmTiO3/SrTiO3听heterostructures,R. F. Need, P. B. Marshall, E. Kenney, A. Suter, T. Prokscha, Z. Salman, B. J. Kirby, S. Stemmer, M. J. Graf, and S. D. Wilson,听npj Quantum Materials听3, 7 (2018).

Spin Dynamics in the Single-Ion Magnet [Er(W5O18)2]9-, M. Mariani, F. Borsa, M. J. Graf, S. Sanna, M. Filibian, T. Orlando, K. P. V. Sabareesh, S. Cardona, E. Coronado, and A. Lascialfari, Phys. Rev. B听听97, 144414 (2018).

Spiral Modes and the Observation of Quantized Conductance in the Surface Bands of Bismuth Nanowires, T. E. Huber, S. Johnson, L. Konopko, A. Nikolaeva, A. Kobylianskaya, and M. J. Graf, Scientific Reports听7, 15569 (2017).

Evolution of Magnetism in LnCuGa3听(Ln = La 鈥 Nd, Sm 鈥 Gd) Studied via 碌SR and Specific Heat, M. J. Graf, J. D. Hettinger, K. Nemeth, R. Dally, C. Baines, U. Subbarao, and S. C. Peter, J. Magn. Magn. Mater.听444, 236 (2017).

Disordered dimer state in electron-doped Sr3Ir2O7, T. Hogan, R. Dally, M. Upton, J. P. Clancy, K. Finkelstein, Y.-J. Kim, M. J. Graf, and S. D. Wilson, Phys. Rev. B 94, 100401(R)听 (2016).

Influence of hydrostatic pressure on the bulk magnetic properties of Eu2Ir2O7, G. Prando, R. Dally, W. Schottenhamel, Z. Guguchia, S.-H. Baek, R. Aeschlimann, A.U.B. Wolter, S. D. Wilson, B. B眉chner, and M. J. Graf, Phys. Rev. B 93, 104422 (2016).

Short-Range Correlations in the Magnetic Ground State of Na4Ir3O8 , R. Dally, T. Hogan, A. Amato, H. Leutkens, C. Baines, J. Rodriguez-Rivera, M. J. Graf, and S. D. Wilson, Phys. Rev. Lett. 113, 247601 (2014).

Magnetic Order in the Pyrochlore Iridates A2Ir2O7 (A = Y, Yb), S. M. Disseler, C. Dhital, A. Amato, S. R. Giblin, C. de la Cruz, S. D. Wilson, and M. J. Graf, Phys. Rev. B 86, 014428 (2012).

Evolution of spin relaxation processes in LiY1-xHoxF4 with increasing x studied via ac-susceptibility and muon spin relaxation, R. C. Johnson, B. Z. Malkin, J. S. Lord, S. R. Giblin, A. Amato, C. Baines, A. Lascialfari, B. Barbara, and M. J. Graf, Phys. Rev. B 86, 014427 (2012).